Coffin and method for collecting human bones

Abstract

A coffin is provided, and the coffin includes a coffin body with a top opening and a coffin lid for closing the coffin body. The coffin lid is provided with an air intake hole and an exhaust air hole, the air intake hole and the exhaust air hole are respectively connected to an air intake device and an exhaust air device through pipelines to supply the oxygen required for decomposition of a body and exhaust waste gases. The coffin lid is further provided with an exhaust liquid pipe connected to a peristaltic pump. An oxygen or carbon dioxide sensor, and a hydrogen sulfide or ammonia concentration sensor are installed in an exhaust channel. The coffin body includes a plastic waterproof bag, and the coffin lid is pasted with adhesive plastic film. The function of the plastic waterproof bag is to prevent waste liquids from polluting the coffin body.

What is claimed is: 
     
       1. A coffin, configured to decompose a body into bones, and collect the bones or cremate the bones into bone ashes; oxygen required for decomposition of the body is supplied in the coffin through one of the following: an air intake hole disposed on the coffin, a gap on the coffin, an opening covered by a breathable membrane disposed on the coffin, and a water electrolysis reaction in the coffin, and waste gases generated during the decomposition of the body are exhausted through an exhaust air hole disposed on the coffin and an exhaust air pipe connected to the exhaust air hole; and
 wherein the coffin comprises a coffin lid and a coffin body covered by the coffin lid, the coffin is provided with a film attached on a bottom of the coffin lid and a waterproof bag disposed in the coffin body, and an edge of the film and a top edge of the waterproof bag are pressed and fixed between the coffin lid and the coffin body to define a closed space configured to accommodate the body. 
 
     
     
       2. The coffin according to  claim 1 , wherein the coffin is provided with a pump, the pump is configured to exhaust excessive waste liquids generated during the decomposition of the body through an exhaust liquid pipe, and the pump is further configured to transmit water rich in bacterium into the coffin through the exhaust liquid pipe to cause the decomposition of the body when the decomposition of the body is not ongoing. 
     
     
       3. The coffin according to  claim 1 , wherein the coffin is provided with sensors to detect concentrations of specific gases in the coffin, the specific gases comprise oxygen, carbon dioxide, ammonia, and hydrogen sulfide; an air intake pump which is connected to the air intake hole and an exhaust air pump which is connected to the exhaust air pipe are controlled to be started or stopped according to changes of the concentrations of the specific gases. 
     
     
       4. The coffin according to  claim 1 , wherein the coffin further comprises: a sealing strip disposed between the film attached on the bottom of the coffin lid and the top edge of the waterproof bag. 
     
     
       5. A method of collecting bones using a coffin, comprising: supplying oxygen required for decomposition of a body in the coffin through one of the following: an air intake hole disposed on the coffin, a gap on the coffin, an opening covered by a breathable membrane disposed on the coffin, and a water electrolysis reaction in the coffin, and exhausting waste gases generated during the decomposition of the body through an exhaust air hole disposed on the coffin and an exhaust air pipe connected to the exhaust air hole;
 further comprises: reusing the coffin which is isolated from waste liquids generated during the decomposition of the body by a waterproof bag in a coffin body of the coffin. 
 
     
     
       6. The method of collecting the bones using the coffin according to  claim 5 , further comprising: after finishing the decomposition of the body, without opening a lid of the coffin, adding water into the coffin, and inserting a water inlet pipe and an outlet pipe through the holes on the lid of the coffin for cleaning the bones in the coffin. 
     
     
       7. The method of collecting the bones using the coffin according to  claim 6 , after finishing cleaning the bones in the coffin, further comprising: blowing dry the bones in the coffin with compressed air through the holes on the lid of the coffin without opening the lid of the coffin. 
     
     
       8. The method of collecting the bones using the coffin according to  claim 5 , further comprising: using one of a specific object and a design to prevent ants or maggots from entering and exiting the coffin through an air intake pipe connected with the air intake hole and the exhaust air pipe, and the specific object and design comprising at least one of the following: one-way valves, screens, porous breathable objects, multi-fiber breathable objects, and breathable membranes. 
     
     
       9. The method of collecting the bones using the coffin according to  claim 5 , further comprising: using a pump to exhaust excessive waste liquids generated during the decomposition of the body in the coffin through an exhaust liquid pipe connected with the pump. 
     
     
       10. The method of collecting the bones using the coffin according to  claim 5 , further comprising: wetting an external air which is supplied into the coffin by the following device:
 a sealed container is partially filled with water, a first pipe and a second pipe are connected with the sealed container, an end of the first pipe is inserted into the water in the sealed container, the other end of the first pipe is out of the sealed container and connected with an air intake pump, an end of the second pipe in the sealed container is above the water in the sealed container, and the other end of the second pipe is connected with an air intake pipe which is connected to the air intake hole on the coffin. 
 
     
     
       11. The method of collecting the bones using the according to  claim 5 , further comprising: using sensors to detect concentrations of specific gases in the coffin, wherein the specific gases comprise oxygen, carbon dioxide, ammonia, and hydrogen sulfide; determining a progress of the decomposition of the body by analyzing a rate of concentration changes of the specific gases in the coffin measured by the sensors. 
     
     
       12. A method of using a coffin to decompose a body into bones, comprising: supplying oxygen required for decomposition of the body in the coffin through one of the following: an air intake hole disposed on the coffin, a gap on the coffin, an opening covered by a breathable membrane disposed on the coffin, and a water electrolysis reaction in the coffin, and exhausting waste gases generated during the decomposition of the body through an exhaust air hole disposed on the coffin and an exhaust air pipe connected to the exhaust air hole; and
 further comprising: using sensors to detect concentrations of specific gases in the coffin, wherein the specific gases comprise oxygen, carbon dioxide, ammonia, and hydrogen sulfide. 
 
     
     
       13. The method of using the coffin to decompose the body into bones according to  claim 12 , further comprising: controlling an air intake pump which is connected to the air intake hole and an exhaust air pump which is connected to the exhaust air pipe to be started or stopped according to changes of the concentrations of the specific gases. 
     
     
       14. The method of using the coffin to decompose the body into bones according to  claim 12 , further comprising: determining a progress of the decomposition of the body by analyzing a rate of concentration changes of the specific gases in the coffin measured by the sensors.